Geladas (Theropithecus gelada), also known as bleeding-heart monkeys, are high-altitude dwellers found only in Ethiopia. The largest population is in the Simien Mountains. During the day, they climb up the cliff and use the plateau's top for foraging and socializing. At sunset, they climb down to cliff ledges and spend the night there. As the sun was about to set, this dominant male gelada monkey paused near the cliff edge, took a few quick glances around and waited for the rest of his group to catch up.